Effect

Generation I

Generation II

Thunder has 100% accuracy when used during heavy rain, and has 50% accuracy if used during bright sunlight. It also has a 30% chance of paralyzing the target. It can hit a Pokémon during the semi-invulnerable turn of Fly.

Generation III

Same as previous generations, but also deals double damage on a Pokémon using Bounce.

Electabuzz fires multiple bolts of yellow electricity from its body at the opponent, or Electabuzz gathers electricity in between the horns on its head, and it fires a blast of yellow electricity from its horns at the opponent.

Magneton's eyes glow red and its magnets become surrounded in yellow static. It then releases a powerful blast of yellow electricity from its body at the opponent. Sometimes, the electricity has black sparks surrounding it.

The balls on the ends of Electivire's antennae become surrounded by yellow electricity. Then, Electivire's whole body becomes surrounded by electricity and it fires a blast of it from its body at the opponent, or the balls at the end of Electivire's antennae become surrounded by yellow electricity, and it fires a beam of yellow electricity from the antennae at the opponent, or Electivire puts its tails on the opponent and they become surrounded by yellow static. Its body then becomes surrounded in yellow electricity and it fires a beam of yellow electricity from the end of its tails at the opponent.

The bands on Zekrom's tail glow light blue with electricity and it flies into the air, releasing a powerful beam of electricity from it straight down, striking the opponent, or Zekrom's wings become surrounded in light blue electricity and it releases a beam of light blue electricity from its body at the opponent.

Thundurus raises both of its arms into the air, touching the back of its fists together before pulling them apart. As it does, light blue sparks of electricity fluctuate in between its hands briefly and it pulls back its arms so its fists are behind its head. Its fists then become surrounded in light blue electricity, and Thundurus brings its arms forward, firing a beam of light blue electricity from its hands at the opponent.

In the manga

In The Electric Tale of Pikachu manga

Pikachu points at the opponent and its body becomes surrounded in electricity. It then fires a powerful beam of electricity from its body at the opponent. When the electricity reaches the opponent, it curls around its body like a twister.

Raikou releases electrical sparks from the purple cloud on its back at the opponent. As it is fired, the sparks merge together and form a large blast of electricity, or the purple cloud on Raikou's back glows longer and rises into the air, turning into the giant thunder cloud. Raikou then fires a large beam of electricity from the thunder cloud at the opponent.

Groudon releases streams of electricity from its body into the sky. The electricity flashes brightly, and Groudon puts its hands together in front of it. Then, an orb of electricity forms in between Groudon's hands and a huge beam of electricity comes crashing down from the sky at the opponent.

Manectric jumps on the opponent and calls upon a thunder cloud. A large bolt of lightning them comes down from the cloud and strikes Manectric, causing its body to become surrounded by lightning. The attack also hurts Manectric.